I am usually between a medium and large and because this is not stretchy I bought the large. It's a nice dress, cute pattern and nice fabric, however the designers of this dress need to realize that women have breasts. I could barely do it up and I am not that large chested. It did fit everywhere else. I asked my teenage daughter if she liked it, she tried it on and it pulls in the chest on her, but not so badly that a snap wouldn't fix, so I guess it is now hers.